ITEM NAME:2PC 1/4 Inches Brass + Plastic Air Compressor Tank Fill Valve 300 Psig Max Description: Made of high quality brass, rustless and sturdy. Standard valve core and plastic cap, Overall length : 1.18 inch. Used with air compressor tanks to fill vessels with air. Tank valve prevents air from leaking out while allowing for air to pass through for inflation. NPT: 1/4" Male national pipe thread. Specification: Material: Metal Size Chart: Total Length: Approx. 30mm/1.18inch Hexagon Side: Approx. 13.8mm/0.54inch Package Includes: 2 Pieces Air Compressor Tank Fill Valve SKU: DMO0012424352027949.2 Pieces Air Compressor Tank Fill Valve. Used with air compressor tanks to fill vessels with air. Tank valve prevents air from leaking out while allowing for air to pass through for inflation. NPT: 1/4" Male national pipe thread.